Re: Strange Thing with Step Wedge

FotoDave@aol.com
Fri, 25 Jul 1997 12:18:42 -0400 (EDT)

In a message dated 97-07-25 11:21:55 EDT, you write:

<< It depends on what you mean by "more" and "low" exposure, but if you
expose film sufficiently long you will start losing density. The usual
s-shaped DlogE plots will show a down slope in density if exposure
continues past the maximum density point. It is a form of reciprocity
failure that occurs at high exposure levels.

Perhaps this is what you are seeing?
>>

Perhaps. I did suspect solarization. The strange thing is that after I lose
some densities, I regain. The curve for solarization for film does show that
the density would go down and then up again. Maybe my exposure did get close
to that point? And Dektol 1:9 could be too weak that it shows the peak at
pretty low density.

However, I also doubt that I had that much overexposure and that weak a
chemical solution, but I will do some tests and post the result.